可快速提供分散式電源於配電饋線轉供之配電自動化系統Distribution automation system that can quickly provide distributed power supply to distribution feeders
本發明係有關於一種可快速提供分散式電源於配電饋線轉供之配電自動化系統，尤指涉及一種運用饋線自動化開關，使再生能源、微電網、或汽電共生廠等分散式電源於配電自動化系統自動切換至不同配電饋線併聯發電，以提升分散式電源之使用率，並減少電力傳輸之線路損失者。The invention relates to a distribution automation system capable of quickly providing a distributed power supply to a distribution feeder, and particularly relates to a feeder automatic switch for regenerative power, a microgrid, or a cogeneration plant, etc. The system automatically switches to different distribution feeders for parallel power generation to increase the usage of decentralized power supplies and reduce the line loss of power transmission.
配電系統發生故障，乃由配電調度中心人員依據現場供電資訊及保護設備動作，來進行故障確認、隔離及恢復供電。若有人為操作設備不當情況發生，將使配電系統故障範圍變大，且平均停電時間增長。因此，為縮短配電系統故障停電時間，許多國際配電系統廠商紛紛投入配電自動化系統開發，藉由饋線負載轉供，來提高配電系統供電可靠度。然而，傳統習知饋線轉供基於安全考量，配電自動化系統之復電程序通常仍以調度員為決策中心，以手動方式進行負載轉供復電，使得用戶停電時間仍可能超過數分鐘以上；除此之外，隨著大量再生能源與分散式電源併接於配電系統，習知配電自動化缺點為無法快速且正確掌握含分散式電源之配電系統運轉資訊，適當協調分散式電源之控制策略，當配電饋線進行負載轉供時，將可能導致配電系統復電失敗，甚至危及配電系統運轉安全。因此，包含著微電網、汽電共生廠、及再生能源發電系統等分散式電源之配電饋線系統，如何透過配電系統自動轉供之邏輯判斷為決策中心，快速進行饋線轉供，將配電系統正確資訊提供給分散式電源發電，提升分散式電源之使用率，以及縮短配電系統停電時間，此般技藝至今仍闕如。 本發明以下面實施範例說明現有饋線轉供狀況，如第６圖所示，其系統架構至少包含有：一座二次變電所（Secondary Substation, S/S）A、一座二次變電所B、數個饋線用戶５ａ～５ｈ、數個饋線開關（SW），其中饋線用戶５ａ～５ｈ內標示A或B，代表其用電之來源為二次變電所A或二次變電所B，而饋線開關資訊皆可由配電自動化系統得知，系統初始狀態為饋線開關SW1打開，饋線開關SW2及SW3投入。 如第７圖所示，當二次變電所B之配電饋線６ｂ發生故障事件時，該饋線之保護電驛偵測故障發生，令饋線開關SW2打開，並藉由配電自動化系統進行故障清除隔離，將饋線開關SW3自動打開，因此該饋線故障點６１ｂ後端之饋線用戶５ｄ～５ｈ，均處於停電狀態（圖中以全黑圖示表示）。經確認饋線故障點６１ｂ前後之饋線開關SW2與SW3均處於打開狀態，由調度員手動投入饋線開關SW1，執行用戶轉供復電作業，轉由二次變電所A進行供電，此時停電狀態之饋線用戶５ｄ～５ｆ則恢復供電，如第８圖所示。 如第９圖(a)所示，若二次變電所B之配電饋線６ｂ上有微電網、汽電共生廠、再生能源發電系統等分散式電源（Distributed Generation, DG）７併聯發電，該分散式電源７除滿足本身用電外，並提供電力至二次變電所B之饋線部分用戶。當二次變電所B之配電饋線６ｂ發生故障，饋線開關SW2與SW3打開，與隔離故障後，二次變電所B之饋線上部分饋線用戶５ｄ～５ｆ可能會不安全的由分散式電源７孤島供電，如第９圖(b)所示。 此時，習知配電自動化系統之二次變電所B之配電饋線６ｂ上部分用戶欲轉供至二次變電所A之配電饋線６ａ，若饋線開關SW1投入，將導致二次變電所A與分散式電源７不同步併聯，使饋線或分散式電源７保護跳脫，及轉供失敗等缺點。儘管分散式電源７具備孤島偵測，可與配電系統解聯，但當配電系統已由另一條正常配電饋線轉供復電 ，現有再生能源發電系統基於安全考量，將需判斷系統電壓恢復正常5分鐘後方能併聯發電，且無法依配電系統運轉資訊適當調整電壓控制，進而影響配電系統供電穩定與用電安全。因此第９圖之饋線系統架構，無法使分散式電源７之電力轉供至二次變電所A，也造成停電時間延長及降低系統可靠度等問題。 有鑑於上述習知配電自動化系統之缺點，及提升分散式電源使用率之重要性，本發明人乃亟思發明一種可快速提供分散式電源於配電饋線轉供系統，運用饋線自動化開關，使分散式電源於配電系統自動切換至不同饋線併聯發電，以提升分散式電源之使用率，並減少電力傳輸之線路損失，藉以改善習用之種種問題。In the event of a power distribution system failure, the power distribution dispatching center personnel will perform fault identification, isolation, and restoration of power supply based on on-site power supply information and protection equipment actions. If someone improperly operates the equipment, the distribution system will become faulty and the average power outage time will increase. Therefore, in order to shorten the power failure time of the power distribution system, many international power distribution system manufacturers have invested in the development of distribution automation systems, and the power supply reliability of the power distribution system is improved by the feeder load transfer. However, traditionally known feeder feeders are based on security considerations. The regenerative program of the distribution automation system usually uses the dispatcher as the decision-making center to manually transfer the load to the re-power, so that the user's power outage time may still exceed several minutes; In addition, with a large number of renewable energy and distributed power supply connected to the power distribution system, the shortcomings of the conventional distribution automation are that it is unable to quickly and correctly grasp the operation information of the distribution system with distributed power, and properly coordinate the control strategy of the distributed power supply. When the load feeder is transferred to the load, it may cause the power distribution system to fail to recover, and even endanger the safety of the power distribution system. Therefore, the distribution feeder system including the distributed power supply of the microgrid, the cogeneration plant, and the renewable energy power generation system can be judged as the decision center through the logic of the automatic transfer of the distribution system, and the feeder line can be quickly transferred to the power distribution system. Information is provided to decentralized power generation, to increase the use of decentralized power supplies, and to reduce power outages in power distribution systems. The present invention illustrates the status of the existing feeder transfer by the following embodiment. As shown in FIG. 6, the system architecture includes at least one secondary substation (S/S) A and one secondary substation B. a plurality of feeder users 5a to 5h and a plurality of feeder switches (SW), wherein the feeder users 5a to 5h are marked with A or B, indicating that the source of the power is the secondary substation A or the secondary substation B, The information of the feeder switch can be known by the distribution automation system. The initial state of the system is that the feeder switch SW1 is turned on, and the feeder switches SW2 and SW3 are input. As shown in Fig. 7, when a fault occurs in the distribution feeder 6b of the secondary substation B, the protection circuit of the feeder detects a fault, causes the feeder switch SW2 to be opened, and the fault clearing isolation is performed by the distribution automation system. The feeder switch SW3 is automatically opened, so the feeder users 5d to 5h at the rear end of the feeder failure point 61b are in a power outage state (indicated by a full black icon in the figure). It is confirmed that the feeder switches SW2 and SW3 before and after the feeder fault point 61b are in an open state, and the dispatcher manually inputs the feeder switch SW1 to perform the user's re-supply operation, and is transferred to the secondary substation A for power supply. The feeder users 5d to 5f resume power supply, as shown in Figure 8. As shown in Fig. 9(a), if the distribution feeder 6b of the secondary substation B has a distributed power generation (DG) 7 parallel power generation such as a microgrid, a cogeneration plant, or a renewable energy power generation system, The distributed power source 7 provides power to the subscribers of the feeder portion of the secondary substation B in addition to the power consumption itself. When the distribution feeder 6b of the secondary substation B fails, the feeder switches SW2 and SW3 are opened, and after the isolation fault, some of the feeder users 5d to 5f on the feeder of the secondary substation B may be unsafe by the distributed power supply. 7 island power supply, as shown in Figure 9 (b). At this time, some users on the distribution feeder 6b of the secondary substation B of the conventional distribution automation system want to transfer to the distribution feeder 6a of the secondary substation A. If the feeder switch SW1 is put in, it will lead to the secondary substation. A and the distributed power supply 7 are not synchronized in parallel, so that the feeder or the distributed power supply 7 is protected from tripping, and the failure of the transfer is failed. Although the distributed power supply 7 has island detection, it can be disconnected from the power distribution system. However, when the power distribution system has been transferred to another normal distribution feeder, the existing renewable energy power generation system will need to judge the system voltage to return to normal based on safety considerations. After a minute, power can be connected in parallel, and the voltage control cannot be properly adjusted according to the operation information of the power distribution system, thereby affecting the power supply stability and power consumption of the power distribution system. Therefore, the feeder system architecture of FIG. 9 cannot transfer the power of the distributed power source 7 to the secondary substation A, which also causes problems such as prolonged power outage time and reduced system reliability. In view of the above-mentioned shortcomings of the conventional distribution automation system and the importance of improving the usage rate of the distributed power source, the inventors have invented a system for rapidly providing distributed power in the distribution feeder supply system, using the feeder automatic switch to disperse The power supply is automatically switched to the power distribution system to connect to different feeders for parallel power generation to improve the utilization rate of the distributed power supply and reduce the line loss of power transmission, so as to improve various problems in the conventional use.
本發明之主要目的係在於，克服習知技藝所遭遇之上述問題並提供一種可於饋線線路發生故障時，饋線開關進行保護切離/故障隔離/同步連動切離之方式，與故障點隔離後，再進行用戶電源轉供，以及分散式電源併入配電饋線供電，整個保護切離與開關投入之過程中，能確保配電自動化系統之供電安全，並使分散式電源能快速轉供發電，以提升分散式電源之使用率，並減少電力傳輸之線路損失之可快速提供分散式電源於配電饋線轉供之配電自動化系統。 本發明之次要目的係在於，提供一種未來可應用於電力公司之饋線調度系統（Feeder Dispatch Control System, FDCS），提升分散式電源供電可靠，使配電系統用戶端迅速恢復供電，以及確保配電系統運轉安全之可快速提供分散式電源於配電饋線轉供之配電自動化系統。 為達以上之目的，本發明係一種可快速提供分散式電源於配電饋線轉供之配電自動化系統，其包括：數個二次變電所（Secondary Substation, S/S）；數條配電饋線，其二端係電性連接至該數個二次變電所與一分散式電源（Distributed Generation, DG）之間；數個饋線用戶，係連接至該數條配電饋線，併聯連接在該數個二次變電所與該分散式電源之間，而該數個饋線用戶係分別使用不同之二次變電所作為饋線電源 ；數個饋線開關（SW），係設置在該數個二次變電所與該分散式電源之間之數條配電饋線上；以及該分散式電源，其前端含有一可與任一配電饋線併聯之併聯饋線開關，且該併聯饋線開關二端係連接有一具通訊功能之同步併聯電驛，當任一配電饋線發生故障異常時，該併聯饋線開關藉由該同步併聯電驛，通知該分散式電源與正常之配電饋線進行同步併聯，且該數條配電饋線上之饋線開關資訊皆可由該配電自動化系統得知。 於本發明上述實施例中，該分散式電源係為再生能源、微電網、或汽電共生廠。 於本發明上述實施例中，當任一配電饋線發生故障異常時，離故障點供電端較近之饋線開關自動執行保護切離，該故障點另一側之饋線開關自動打開進行隔離，且連鎖作動打開該配電饋線與該分散式電源之併聯饋線開關後，執行用戶轉供復電作業，使該數個饋線用戶可繼續用電，再將該配電饋線與該分散式電源之併聯饋線開關投入。 於本發明上述實施例中，根據該分散式電源與饋線併聯處裝設之併聯饋線開關，形成一可轉供之饋線區域。 為使貴審查委員能對本專利之特徵、目的及功能有更進一步的認知與瞭解，茲藉由下文之實施方式對本專利之細部結構以及設計的理念原由進行說明，以使得審查委員可以了解本專利之特點。The main object of the present invention is to overcome the above problems encountered in the prior art and to provide a way for the feeder switch to perform protection cut-off/fault isolation/synchronous linkage cut-off when the feeder line fails, and is isolated from the fault point. Then, the user power supply is transferred, and the distributed power supply is integrated into the distribution feeder power supply. During the entire protection cut-off and switch input, the power supply safety of the distribution automation system can be ensured, and the distributed power supply can be quickly converted to generate power. By increasing the utilization rate of distributed power sources and reducing the line loss of power transmission, it can quickly provide distributed power distribution to the distribution automation system for distribution feeders. A secondary object of the present invention is to provide a Feeder Dispatch Control System (FDCS) that can be applied to a power company in the future, to improve the reliability of distributed power supply, to quickly restore the power supply system user terminal, and to ensure the power distribution system. Operational safety can quickly provide a distributed power supply to the distribution automation system for distribution feeders. In order to achieve the above purpose, the present invention is a distribution automation system capable of rapidly providing distributed power supply to distribution feeders, including: a plurality of secondary substation (S/S); and several distribution feeders. The two ends are electrically connected between the plurality of secondary substations and a distributed power generation (DG); a plurality of feeder users are connected to the plurality of distribution feeders, and are connected in parallel in the plurality of The secondary substation is connected to the distributed power source, and the plurality of feeder users respectively use different secondary substations as feeder power sources; and a plurality of feeder switches (SW) are disposed in the plurality of secondary transformers a plurality of distribution feeders between the electric station and the distributed power source; and the decentralized power supply, the front end of which includes a parallel feeder switch that can be connected in parallel with any of the distribution feeders, and the parallel feeder switch has a communication connection at the two ends The synchronous parallel electric circuit of the function, when any distribution feeder fails abnormally, the parallel feeder switch informs the distributed power supply to synchronously connect with the normal distribution feeder by the synchronous parallel electric circuit. Feed line switching information on the number of the distribution feeder Jieke known from the distribution automation system. In the above embodiment of the present invention, the distributed power source is a renewable energy source, a micro grid, or a cogeneration plant. In the above embodiment of the present invention, when any of the distribution feeders has a fault abnormality, the feeder switch that is closer to the power supply end of the fault point automatically performs the protection cutoff, and the feeder switch on the other side of the fault point is automatically opened for isolation, and is interlocked. After actuating to open the parallel feeder switch of the distribution feeder and the distributed power supply, performing a user-returning power supply operation, so that the plurality of feeder users can continue to use power, and then inputting the distribution feeder and the parallel feeder switch of the distributed power supply . In the above embodiment of the present invention, a feeder line region that can be transferred is formed according to the parallel feeder switch installed in parallel with the distributed power source and the feeder. In order to enable the review committee to have a better understanding and understanding of the features, purposes and functions of this patent, the detailed structure of the patent and the original idea of the design are explained by the following embodiments so that the reviewer can understand the patent. The characteristics.
請參閱『第１圖～第５圖』所示，係分別為本發明之系統架構示意圖、本發明之運作流程示意圖、本發明饋線發生故障之開關跳脫與連動切離示意圖、本發明之饋線復電示意圖、及本發明之分散式電源併聯饋線供電示意圖。如圖所示：本發明係一種可快速提供分散式電源於配電饋線轉供之配電自動化系統，其至少包含有二座二次變電所（Secondary Substation, S/S）A與B、數條配電饋線１ａ、１ｂ、數個饋線用戶２ａ～２ｈ、數個饋線開關（SW）、及一分散式電源（Distributed Generation, DG）３所構成。 上述所提之配電饋線１ａ，其二端係電性連接至該二次變電所A與該分散式電源３之間，而配電饋線１ｂ，其二端係電性連接至該二次變電所B與該分散式電源３之間。 該數個饋線用戶２ａ～２ｃ係分別連接至該配電饋線１ａ，併聯連接在該二次變電所A與該分散式電源３之間，以及該數個饋線用戶２ｄ～２ｈ係連接至該配電饋線１ｂ，併聯連接在該二次變電所B與該分散式電源３之間。而該數個饋線用戶２ａ～２ｈ內標示A、B代表其用電之來源為該二次變電所A或該二次變電所B。 該數個饋線開關（SW1～SW3）包含設置在該二次變電所A與該分散式電源３之間之配電饋線上１ａ之饋線開關SW1，以及設置在該二次變電所B與該分散式電源３之間之配電饋線上１ｂ之饋線開關SW2與饋線開關SW3。 該分散式電源３可為再生能源發電系統、微電網、或汽電共生廠，且該分散式電源３前端含有一可與任一配電饋線１ａ或１ｂ併聯之併聯饋線開關SW4，而該併聯饋線開關SW4二端係連接有一具通訊功能之同步併聯電驛３１，根據該分散式電源３與饋線併聯處裝設之併聯饋線開關SW4，形成一可轉供之饋線區域３２。當任一配電饋線１ａ或１ｂ發生故障異常時，可自動打開饋線與分散式電源３之併聯饋線開關SW4，使異常之配電饋線１ａ或１ｂ與分散式電源３隔離；另一正常之配電饋線１ｂ或１ａ可進行電力轉供，該併聯饋線開關SW4再藉由具通訊方式之同步併聯電驛３１，通知該分散式電源３與正常之配電饋線１ｂ或１ａ進行同步併聯，藉以調整分散式電源３控制方式，以提升分散式電源３之使用率，並減少電力傳輸之線路損失。其中該數條配電饋線１ａ、１ｂ上之開關（SW1～SW4）資訊皆可由該配電自動化系統得知。如是，藉由上述揭露之結構構成一全新之可快速提供分散式電源於配電饋線轉供之配電自動化系統。 當運用時，系統初始狀態如第１圖所示，本發明將依據第１圖之發明技術範圍，提出可快速提供分散式電源於配電饋線轉供之流程，如第２圖所示，後續並依此流程，進行實施範例之說明。 讀取饋線開關投切狀態s100：系統初始狀態為饋線開關SW1打開，饋線開關SW2至SW4投入，分散式電源３經由饋線開關SW4，供電給二次變電所B之配電饋線１ｂ。 二次變電所B饋線故障，饋線開關保護跳脫，饋線開關故障隔離s101：如第３圖所示，當二次變電所B之配電饋線１ｂ發生故障事件，離故障點１１ｂ供電端較近之饋線開關SW2自動執行保護切離，以保護故障點１１ｂ供電端之線路及用戶；故障點１１ｂ後端之配電饋線１ｂ ，依據配電自動化系統進行饋線開關SW3打開，將饋線用戶２ｇ、２ｈ與故障點１１ｂ進行隔離。 饋線併聯DG之併聯饋線開關切離s102：如第３圖所示，連鎖作動打開配電饋線１ｂ與分散式電源３之併接饋線開關SW4。 二次變電所A饋線開關投入，原先二次變電所B饋線供電之用戶轉由二次變電所A饋線供電s103：如第３圖所示，此時饋線開關SW1、SW3及SW4間饋線用戶２ｄ～２ｆ為停電狀態，並確認故障點１１ｂ前後之饋線開關SW2、SW3及分散式電源３之併聯饋線開關SW4均處於打開狀態，依流程規劃饋線開關SW1投入，執行用戶轉供復電作業，完成二次變電所A提供電力給停電狀態之饋線用戶２ｄ～２ｆ使用，如第４圖所示。 運用通訊方式與同步併聯電驛，通知分散式電源與二次變電所A饋線進行同步併聯s104：如第５圖所示，運用通訊方式與同步併聯電驛３１，通知分散式電源３與二次變電所A之配電饋線１ａ進行同步併聯 ，將分散式電源３與饋線之併聯饋線開關SW4投入，可使分散式電源３發電轉供給二次變電所A之饋線用戶使用。 步驟s105～s108亦與上述步驟s101～s104相同，僅是將原二次變電所B饋線故障變更為二次變電所A饋線故障。 藉此，本發明提供一種分散式電源可於配電饋線快速轉供之配電自動化系統架構及流程，運用饋線自動化開關，使再生能源、微電網、或汽電共生廠等分散式電源於配電自動化系統自動切換至不同配電饋線併聯發電，以提升分散式電源之使用率。當配電饋線發生異常時，自動打開饋線與分散式電源之併聯饋線開關，使饋線與分散式電源隔離；之後，饋線進行電力轉供，並運用通訊方式與同步併聯電驛，通知分散式電源與另一正常之配電饋線進行同步併聯，以達成饋線上之分散式電源快速轉供。本發明不僅可提供配電系統運轉資訊，用以適當協調分散式電源之控制策略，以提升分散式電源使用率，減少電力傳輸之線路損失，於未來更可應用於電力公司之饋線調度系統（Feeder Dispatch Control System, FDCS），提升分散式電源供電可靠，使配電自動化系統用戶端迅速恢復供電，以及確保配電自動化系統運轉安全。 綜上所述，本發明係一種可快速提供分散式電源於配電饋線轉供之配電自動化系統，可有效改善習用之種種缺點，可於饋線線路發生故障時，饋線開關進行保護切離/故障隔離/同步連動切離之方式，與故障點隔離後，再進行用戶電源轉供，以及分散式電源併入配電饋線供電，整個保護切離與開關投入之過程中，能確保配電自動化系統之供電安全，並使分散式電源能快速轉供發電，以提升分散式電源之使用率，並減少電力傳輸之線路損失，進而使本發明之産生能更進步、更實用、更符合使用者之所須，確已符合發明專利申請之要件，爰依法提出專利申請。 惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍；故，凡依本發明申請專利範圍及發明說明書內容所作之簡單的等效變化與修飾，皆應仍屬本發明專利涵蓋之範圍內。Please refer to FIG. 1 to FIG. 5 , which are schematic diagrams of the system architecture of the present invention, a schematic diagram of the operation flow of the present invention, a switch tripping and interlocking disconnection diagram of the feeder line fault of the present invention, and a feeder line of the present invention. The schematic diagram of the power generation and the power supply diagram of the parallel power supply of the distributed power supply of the present invention. As shown in the figure: the present invention is a distribution automation system capable of quickly providing a distributed power supply to a distribution feeder, which includes at least two secondary substation (S/S) A and B, and several The distribution feeders 1a and 1b, the plurality of feeder users 2a to 2h, the plurality of feeder switches (SW), and a distributed power generation (DG) 3 are formed. The above-mentioned distribution feeder 1a has two ends electrically connected between the secondary substation A and the distributed power source 3, and the distribution feeder 1b is electrically connected to the secondary substation. B is between the distributed power source 3. The plurality of feeder users 2a to 2c are respectively connected to the distribution feeder 1a, connected in parallel between the secondary substation A and the distributed power source 3, and the plurality of feeder users 2d to 2h are connected to the distribution. The feeder 1b is connected in parallel between the secondary substation B and the distributed power source 3. In the plurality of feeder users 2a to 2h, A and B indicate that the source of the power is the secondary substation A or the secondary substation B. The plurality of feeder switches (SW1 to SW3) include a feeder switch SW1 disposed on the distribution feeder 1a between the secondary substation A and the distributed power source 3, and the second substation B and the The feeder switch SW2 and the feeder switch SW3 of the distribution feeder 1b between the distributed power sources 3. The distributed power source 3 can be a renewable energy power generation system, a micro grid, or a steam and electricity symbiosis plant, and the front end of the distributed power source 3 includes a parallel feeder switch SW4 that can be connected in parallel with any of the distribution feeders 1a or 1b, and the parallel feeder The two ends of the switch SW4 are connected with a synchronous parallel electric circuit 31 with a communication function. According to the parallel feed line switch SW4 installed in parallel with the distributed power supply 3, a feedable supply line region 32 is formed. When any faulty abnormality occurs in any of the distribution feeders 1a or 1b, the parallel feeder switch SW4 of the feeder and the distributed power source 3 can be automatically turned on to isolate the abnormal distribution feeder 1a or 1b from the distributed power source 3; another normal distribution feeder 1b Or 1a can perform power transfer, and the parallel feeder switch SW4 further informs the distributed power supply 3 to synchronously connect with the normal distribution feeder 1b or 1a by means of the synchronous parallel power supply 31 with communication mode, thereby adjusting the distributed power supply 3 The control method is to improve the usage rate of the distributed power source 3 and reduce the line loss of power transmission. The information of the switches (SW1 - SW4) on the plurality of distribution feeders 1a, 1b can be known by the distribution automation system. If so, the above disclosed structure constitutes a new distribution automation system that can quickly provide distributed power to the distribution feeder. When used, the initial state of the system is as shown in Fig. 1. According to the technical scope of the invention of Fig. 1, the present invention proposes a process for rapidly providing distributed power to the distribution feeder, as shown in Fig. 2, followed by According to this process, an explanation of the implementation example is performed. The feeder switch switching state s100 is read: the initial state of the system is that the feeder switch SW1 is turned on, the feeder switches SW2 to SW4 are input, and the distributed power source 3 is supplied to the distribution feeder 1b of the secondary substation B via the feeder switch SW4. Secondary substation B feeder fault, feeder switch protection trip, feeder switch fault isolation s101: As shown in Figure 3, when the secondary substation B of the distribution feeder 1b has a fault event, from the fault point 11b power supply end Nearly the feeder switch SW2 automatically performs protection cut-off to protect the line and user of the power supply end of the fault point 11b; the power distribution feeder 1b at the back end of the fault point 11b, the feeder switch SW3 is opened according to the distribution automation system, and the feeder users 2g, 2h and The fault point 11b is isolated. The parallel feeder switch of the feeder parallel DG is switched away from s102: as shown in FIG. 3, the interlocking operation opens the parallel connection of the distribution feeder 1b and the distributed power source 3 to the feeder switch SW4. The secondary substation A feeder switch is put into operation. The user of the original secondary substation B feeder supply is transferred to the secondary substation A feeder supply s103: as shown in Fig. 3, at this time, between the feeder switches SW1, SW3 and SW4 The feeder users 2d to 2f are in a power outage state, and it is confirmed that the feeder switches SW2 and SW3 before and after the fault point 11b and the parallel feeder switch SW4 of the distributed power source 3 are all in an open state, and the feeder switch SW1 is put into operation according to the process, and the user is transferred to the power supply. The operation is completed by the feeder users 2d to 2f that provide power to the secondary substation A to the power outage state, as shown in Fig. 4. Using the communication method and the synchronous parallel power supply, the distributed power supply and the secondary substation A feeder are synchronously connected in parallel with each other. s104: As shown in Fig. 5, the communication mode and the synchronous parallel power supply 31 are used to notify the distributed power supply 3 and 2 The distribution feeder 1a of the sub-substation A is synchronously connected in parallel, and the distributed power supply 3 and the parallel feeder switch SW4 of the feeder are input, so that the distributed power supply 3 can be converted and supplied to the feeder user of the secondary substation A. Steps s105 to s108 are also the same as steps s101 to s104 described above, and only the original secondary substation B feeder line failure is changed to the secondary substation A feeder failure. Accordingly, the present invention provides a distribution automation system architecture and process for a distributed power supply that can be rapidly transferred to a distribution feeder, and uses a feeder automatic switch to enable a distributed power source such as a renewable energy source, a micro grid, or a steam and electricity symbiosis plant in a distribution automation system. Automatically switch to different distribution feeders for parallel power generation to increase the usage of distributed power supplies. When an abnormality occurs in the distribution feeder, the parallel feeder switch of the feeder and the distributed power supply is automatically turned on to isolate the feeder from the distributed power supply; after that, the feeder is transferred to the power supply, and the communication mode and the synchronous parallel power supply are used to notify the distributed power supply and Another normal distribution feeder is synchronously connected in parallel to achieve a rapid transfer of the distributed power supply on the feeder. The invention can not only provide the operation information of the power distribution system, but also appropriately coordinate the control strategy of the distributed power source, thereby improving the distributed power source utilization rate and reducing the line loss of the power transmission, and is more applicable to the power company's feeder dispatching system (Feeder) in the future. Dispatch Control System (FDCS), which improves the reliability of distributed power supply, enables the customer of the distribution automation system to quickly restore power and ensure the safety of the distribution automation system. In summary, the present invention is a distribution automation system that can quickly provide a distributed power supply to a distribution feeder, which can effectively improve various shortcomings of the conventional use, and can protect the cut-off/fault isolation of the feeder switch when the feeder line fails. / Synchronous interlocking method, after isolation from the fault point, the user power supply is transferred, and the distributed power supply is integrated into the distribution feeder power supply. The entire protection cut-off and switch input process can ensure the power supply safety of the distribution automation system. And enabling the distributed power supply to be quickly converted to power generation, thereby increasing the utilization rate of the distributed power supply and reducing the line loss of the power transmission, thereby making the invention more progressive, more practical, and more suitable for the user. It has indeed met the requirements of the invention patent application, and has filed a patent application according to law. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; therefore, the simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the invention are modified. All should remain within the scope of the invention patent.
（本發明部分）
A、B‧‧‧二次變電所
１ａ、１ｂ‧‧‧配電饋線
１１ｂ‧‧‧故障點
２ａ～２ｈ‧‧‧饋線用戶
SW1～SW3‧‧‧饋線開關
SW4‧‧‧併聯饋線開關
３‧‧‧分散式電源
３１‧‧‧同步併聯電驛
３２‧‧‧饋線區域
s100～s108‧‧‧步驟
（習用部分）
A、B‧‧‧二次變電所
５ａ～５ｈ‧‧‧饋線用戶
SW1～SW3‧‧‧饋線開關
６ａ、６ｂ‧‧‧配電饋線
６１ｂ‧‧‧故障點
７‧‧‧分散式電源
(part of the invention)
A, B‧‧ ‧ secondary substation 1a, 1b‧‧‧ distribution feeder 11b‧‧‧ fault point 2a~2h‧‧‧ feeder user
SW1～SW3‧‧‧ feeder switch
SW4‧‧‧ Parallel Feeder Switch 3‧‧‧Distributed Power Supply 31‧‧‧Synchronous Parallel Power 32‧‧‧ Feeder Area
S100～s108‧‧‧Steps (customized part)
A, B‧‧‧Second Substation 5a~5h‧‧‧ Feeder users
SW1～SW3‧‧‧ Feeder switch 6a, 6b‧‧‧Distribution feeder 61b‧‧‧ Fault point 7‧‧‧Distributed power supply
第１圖，係本發明之系統架構示意圖。 第２圖，係本發明之運作流程示意圖。 第３圖，係本發明饋線發生故障之開關跳脫與連動切離示意圖。 第４圖，係本發明之饋線復電示意圖。 第５圖，係本發明之分散式電源併聯饋線供電示意圖。 第６圖，係習用系統正常運轉之初始狀態示意圖。 第７圖，係習用二次變電所B饋線發生故障示意圖。 第８圖，係習用完成饋線轉供示意圖。 第９圖，係習用包含分散式電源之饋線架構示意圖。Figure 1 is a schematic diagram of the system architecture of the present invention. Figure 2 is a schematic diagram of the operational flow of the present invention. Fig. 3 is a schematic diagram showing the switch tripping and interlocking disconnection of the feeder line of the present invention. Figure 4 is a schematic diagram of the re-energization of the feeder of the present invention. Figure 5 is a schematic diagram of the power supply of the distributed power supply parallel feeder of the present invention. Figure 6 is a schematic diagram showing the initial state of the normal operation of the conventional system. Figure 7 is a schematic diagram of the failure of the feeder of the secondary substation B. Figure 8 is a schematic diagram of the completion of feed line transfer. Figure 9 is a schematic diagram of a feeder architecture with a distributed power supply.